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mushtaqilyas
Joined: 25 Mar 2006 Posts: 2
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Posted: Sat Mar 25, 2006 3:39 pm Post subject: Sony trinitron tv, blue screen problem |
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Hello All
The problem with my 25 inch kv-f25mf1 is that
Suddenly a blue screen with flickering angled lines appears. After a second or two it leaves. This keeps happening for a few days (weeks) and then new problems develop.
I have had to replace the system ic, RF block etc but i still can't get rid of this problem.
Regards |
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JamesQB
Joined: 23 Aug 2005 Posts: 26
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Posted: Sun Mar 26, 2006 11:48 am Post subject: |
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Sounds like the blue cathode in the CRT has an intermittent short-circuit - a heater to cathode short. Have you elimated the blue cathode being the trouble by swapping guns, say putting the green output to the blue cathode and vice versa? If you then have a green screen with flyback lines you know the trouble isn't the CRT... |
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mushtaqilyas
Joined: 25 Mar 2006 Posts: 2
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Posted: Sun Mar 26, 2006 3:22 pm Post subject: |
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The Problem is not permanent but rare. And if it was the short you mentioned it shouldn't cause the other components to fail with time? Anyhow I'm going to tray the swap, lets see if the problem comes up again? Could it be a dry joint?
Regards
Mushtaq Ilyas |
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